Red tiny spots on penis head! pls help

(a) In order to make my foreskin loose, I am in stretching pratice for almost 2 weeks and it had resulted favorable too. All this was going as one gets the suggestions on many threads of LPSG. (thanks buddies)

(b)Yesterday, I took two dose(s) of antibiotics (for some intestine infection) by mistake (i was supposed to take one only)

(c) Since then, I was feeling sweating, dried and exhausted.

(d) This morning, I found red tiny spots on my penis head. These are scary on my beautiful glans. Can anyone suggest me if it is because of activity (a) or excessive heat of (b) as described above or any other reason.

I am 31, never had sex with anyone, only masturbate and long ago had a frot session.